JP3455318B2 - How to remove piping from inside the pipeline - Google Patents
How to remove piping from inside the pipelineInfo
- Publication number
- JP3455318B2 JP3455318B2 JP05358695A JP5358695A JP3455318B2 JP 3455318 B2 JP3455318 B2 JP 3455318B2 JP 05358695 A JP05358695 A JP 05358695A JP 5358695 A JP5358695 A JP 5358695A JP 3455318 B2 JP3455318 B2 JP 3455318B2
- Authority
- JP
- Japan
- Prior art keywords
- pipeline
- pipes
- pipe
- opening
- slope
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は地中に埋設した管路内に
配設されている小径の配管類を該管路内から円滑に撤
去、回収する方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for smoothly removing and recovering small-diameter pipes arranged in a pipeline buried in the ground.
【０００２】[0002]
【従来の技術】従来から、例えば、適宜間隔を存して掘
削形成した発進立坑と到達立坑との間の地中に泥水式シ
ールド工法や泥水式推進工法によってヒューム管等の定
尺既成管よりなる管路を敷設する場合、発進立坑からシ
ールド掘削機に後続させて定尺既成管を順次継ぎ足しな
がら埋設していくが、その際、一本の定尺既成管の埋設
毎に該既成管の長さに等しい送、排泥水管を継ぎ足し、
送泥水管からの泥水をシールド掘削機側に送り込んで掘
削土砂を排泥水管を通じて発進立坑から地上に排出して
いる。そして、両立坑間に一連の定尺既成管よりなる管
路が形成されると送、排泥水管及びその他の配管類の撤
去作業を行っている。2. Description of the Related Art Conventionally, for example, in the ground between a starting shaft and a reaching shaft formed by excavating at an appropriate interval, a mud-type shield method or a mud-type propulsion method is used to make In the case of laying a pipeline, the sewage pit will be followed by a shield excavator and the sewage pipes will be sequentially added while being buried. Equivalent to the length, add a drainage pipe,
The muddy water from the muddy water pipe is sent to the shield excavator side, and the excavated soil is discharged from the starting shaft to the ground through the muddy water pipe. Then, when a pipeline consisting of a series of standard length preformed pipes is formed between the compatible mines, it is sent and the work of removing the waste mud water pipe and other pipes is performed.
【０００３】このような配管類の撤去は、シールド掘削
機側に連結した配管類のジョイント部を切り離したの
ち、発進立坑から配管類をワイヤで牽引して引き出す方
法、或いは、予め、送、排泥水管等の配管類を台車上に
支持させた状態にして上記のように管路内に配設してお
き、管路の形成後、台車と共に立坑内に引き出す方法が
採用されている。The removal of such pipes is performed by separating the joint portion of the pipes connected to the shield excavator side, and then pulling the pipes out by pulling them from the starting shaft with a wire, or by sending and discharging in advance. A method is employed in which pipes such as a muddy water pipe are supported on a bogie and arranged in the pipe as described above, and after the pipe is formed, the pipe is pulled out into the shaft together with the bogie.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、前者の
方法によれば、ジョイント部から切り離した配管類を管
路の内底面上を摺接させながら引き出すものであるか
ら、管路の内壁面に配管類の摺擦による擦り傷等の損傷
が生じる虞れがあり、後者の方法によれば、配管類の配
設用台車を別途に必要として工費が高くつくばかりでな
く、管路の形成後、立坑内に引き出す作業を行う時に、
一定長の配管類を引き出す毎に台車からの取外し作業と
台車の撤去作業を必要とし、作業能率が低下するという
問題点があった。このような問題点は管路の形成後、該
管路内に配設している配管類を撤去するという上記の場
合に限らず、既設の管路において、その内部に収納して
いるガス管等の配管類を交換する際においても生じるも
のである。However, according to the former method, the pipes separated from the joint portion are pulled out while slidingly contacting the inner bottom surface of the pipe line, and therefore the pipe is attached to the inner wall surface of the pipe line. There is a risk of damage such as scratches due to rubbing of pipes, and the latter method not only requires a separate carriage for arranging pipes, but also increases the construction cost. When you pull it out,
Each time a certain length of piping is pulled out, it is necessary to remove the dolly from the dolly and remove the dolly, resulting in a problem of reduced work efficiency. Such a problem is not limited to the above case in which the pipes arranged in the pipeline are removed after the pipeline is formed, and the gas pipe accommodated inside the existing pipeline is not limited to the above case. It also occurs when replacing pipes such as.
【０００５】本発明はこのような問題点に鑑みてなされ
たもので、配管類を管路の内底面に摺接させることな
く、且つ、台車等による搬出を不要にして円滑且つ確実
な配管類の撤去、回収を可能にすることを目的とする管
路内からの配管類の撤去方法を提供するものである。The present invention has been made in view of the above problems, and it is a smooth and reliable pipe which does not need to be slidably contacted with the inner bottom surface of the pipe and does not need to be carried out by a truck or the like. It is intended to provide a method of removing pipes from the inside of a pipeline for the purpose of enabling removal and recovery of the pipe.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
に本発明における管路内からの配管類の撤去方法は、立
坑間の地中に敷設した管路内に該管路の長さ方向に配設
している屈曲可能な配管類を撤去する方法であって、管
路の両端開口部の下周部側を堰止めて管路内に上記配管
類を浮かせる高さまで水を注入、滞留させると共に管路
の一端開口部側に該管路の内底面から開口端に向かって
斜め上方に傾斜したスロープを設け、且つ配管類の他端
開口部を密閉して該配管類を水中に浮かせた状態にし、
この状態で配管類を一方の立坑側に開口している管路の
一端側から牽引してスロープに沿って管路外に引き出す
ことを特徴とするものである。In order to achieve the above object, a method for removing pipes from the inside of a pipe according to the present invention is a pipe installed in the ground between vertical shafts in the longitudinal direction of the pipe. The method is to remove the bendable pipes that are installed in the pipe, injecting water to a height where the above pipes can be floated in the pipe line by blocking the lower peripheral side of the opening at both ends of the pipe line and staying there. At the same time, a slope is provided on the one end opening side of the pipe line, which slopes obliquely upward from the inner bottom surface of the pipe line toward the opening end, and the other end opening of the pipe line is closed to float the pipe line in water. And put
In this state, the pipes are towed from one end side of the pipe line that is open to one of the vertical shafts and pulled out of the pipe line along the slope.
【０００７】上記方法において、管路の両端開口部を堰
き止めるには、請求項２に記載したように、両端開口部
共に堰板によって行ってもよく、また、請求項２に記載
したように、管路の一端開口部の堰止めをスロープで兼
用させ、他端開口部に堰板を配設しておいてもよい。In the above method, the opening at both ends of the pipeline may be blocked by a dam plate at both ends as described in claim 2, and as described in claim 2. It is also possible that the slope also serves as a dam for the opening on one end of the conduit and a dam plate is arranged on the opening for the other end.
【０００８】[0008]
【作用】管路の両端開口部を堰止めて管路内に一定水位
まで水を注入、滞留させると、管路内に配設している配
管類に浮力が発生して配管類が管路の内底面に摺接する
ことなく浮上した状態となる。この状態にして管路の一
端側から一方の立坑内に配管類を引き出すと、配管類が
水中に浮かんいるので、小さな牽引力でもって円滑且つ
正確に管路の一端開口部から引き出すことができる。こ
の際、管路の一端開口部の内底面に該開口端に向かって
斜め上方に傾斜したスロープを配設しているので、配管
類はジョイント部を介して屈折しながらこのスロープ上
を伝って堰止め部を乗り越え、管路外に引き出される。
引き出された定尺の配管は順次ジョイント部から切り離
して撤去する。[Operation] When the both ends of the pipeline are blocked and water is injected and retained in the pipeline up to a certain water level, buoyancy is generated in the pipelines arranged in the pipeline and the pipelines are It will be in a state of floating without sliding on the inner bottom surface of the. When the pipes are pulled out from one end side of the pipeline into one of the shafts in this state, the pipes float in the water, so that they can be smoothly and accurately pulled out from the one end opening of the pipeline with a small traction force. At this time, since a slope inclined obliquely upward toward the opening end is arranged on the inner bottom surface of the opening at one end of the pipe, the pipes are bent over the joint while passing along this slope. It gets over the barrier and is pulled out of the pipeline.
The drawn standard length pipes will be removed from the joint section in order.
【０００９】[0009]
【実施例】次に、本発明の実施例を図面について説明す
ると、図１は発進立坑11と到達立坑12との間の地中に埋
設されている管路１から該管路１内に配設されている配
管類２を水中に浮上させた状態にして発進立坑11側に引
出し、撤去している状態を示すもので、管路１は一定長
さを有するヒューム管等の既成管1aを多数本、順次直列
状に接続してなるものであり、配管類２は小径のガス
管、或いは管路形成時に使用した送、排泥水管等の一定
の小径管体2aを多数本、ビクトリックジョイント等の屈
曲可能なジョイント部2bを介して直列状に連結してなる
ものである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, referring to the drawings, an embodiment of the present invention will be described. In FIG. 1, a pipe line 1 buried in the ground between a starting shaft 11 and a reaching shaft 12 is installed in the pipe line 1. It shows a state where the installed pipes 2 are floated in the water and pulled out to the side of the starting shaft 11 and then removed. The pipeline 1 is a ready-made pipe 1a such as a fume pipe having a certain length. A large number of pipes 2 are sequentially connected in series, and the pipes 2 are small-diameter gas pipes, or a large number of small-diameter pipes 2a such as a feed pipe and a sludge drain pipe used when forming a pipe line It is connected in series via a bendable joint portion 2b such as a joint.
【００１０】この配管類２を回収、撤去するには、ま
ず、両立坑11、12側に夫々開口している管路１の両端開
口部の開口端下部に、該管路１の内底面から所望高さ部
分に達する高さを有する堰板３、４を水密的に固着する
と共に発進立坑11側に開口している管路１の一端部の内
底面に上面が管路１の内側から堰板３に向かって徐々に
高くなる方向に傾斜しているスロープ５を敷設、固定す
る。このスロープ５は、堰板３との対向面に密接或いは
近接させている一端側の最も高い部分を堰板３の高さに
略等しく形成している。さらに、該スロープ５の配設と
共に到達立坑12側に開口している配管類２の開口他端を
盲蓋６によって水密的に密閉する。なお、管路１の一端
開口部に配設した堰板３は必ずしも必要とすることな
く、スロープ５によってその堰板を兼用させるようにす
ることもできる。In order to collect and remove the pipes 2, first of all, from the inner bottom surface of the pipeline 1 to the lower end of the open end of both ends of the pipeline 1 which is open to the compatible wells 11 and 12, respectively. The weir plates 3 and 4 having a height reaching a desired height portion are fixed in a watertight manner, and the inner bottom surface of one end of the pipeline 1 that is open to the starting shaft 11 side has an upper surface from the inside of the pipeline 1 to the weir. Laying and fixing the slope 5 that is inclined toward the plate 3 in a direction that gradually increases. The slope 5 is formed such that the highest portion on one end side that is in close contact with or close to the surface facing the barrier plate 3 is approximately equal to the height of the barrier plate 3. Further, with the provision of the slope 5, the other end of the opening of the piping 2 which is open to the reaching shaft 12 side is watertightly sealed by a blind lid 6. The dam plate 3 provided at the one end opening of the conduit 1 is not always necessary, and the slope 5 may also serve as the dam plate.
【００１１】この状態にして到達立坑12側（発進立坑11
側からでもよい）から給水管７を通じて両端が堰板３、
４で堰き止められた管路１内に水８を所定水位まで注
入、滞留させると、配管類２は浮力を受けてその上周部
側が水面から突出し且つ水中に没入した下周面が管路１
の内底面から適宜間隔だけ浮上した状態となる。なお、
発進立坑11側においては、管路１の一端側内底面にスロ
ープ５が配設されているので、配管類２の一端部側の小
径管体2aはその外底面（外周下部）をスロープ５上に受
止されてこの小径管体2aと水中で浮上している小径管体
2aとは可撓性を有する上記ジョイント部2bを介して屈折
した状態となる。In this state, the reaching shaft 12 side (starting shaft 11
From the side) through both ends of the weir plate 3 through the water supply pipe 7,
When water 8 is poured into and retained in the pipeline 1 blocked by 4 to a predetermined water level, the piping 2 receives buoyancy and its upper peripheral side projects from the water surface and the lower peripheral surface immersed in water is the pipeline. 1
It will be in a state of being levitated by an appropriate distance from the inner bottom surface of the. In addition,
On the side of the starting shaft 11, the slope 5 is arranged on the inner bottom surface on one end side of the pipe line 1, so that the small-diameter pipe body 2a on the one end side of the piping 2 has its outer bottom surface (lower outer periphery) on the slope 5. The small-diameter pipe 2a that has been received by
2a is in a state of being bent through the flexible joint portion 2b.
【００１２】次いで、発進立坑11側に開口しているスロ
ープ５上の小径管体2a（配管類２の一端部）に、地上側
に設置したクレーンや巻取ドラム等の装置（図示せず）
から引き出しているワイヤ等の索条物９の端部を結着す
る。この際、発進立坑11内に挿入した索条物９をスロー
プ５の傾斜延長線上における発進立坑11の一側壁に固定
した滑車10に掛け渡したのち、その端部を上記小径管体
2aに結着している。Next, a device (not shown) such as a crane or a take-up drum installed on the ground side is provided on the small-diameter pipe body 2a (one end of the pipes 2) on the slope 5 which is open to the start shaft 11 side.
The ends of the cord 9 such as a wire pulled out from the above are bound. At this time, the cord 9 inserted into the starting shaft 11 is hung over the pulley 10 fixed to one side wall of the starting shaft 11 on the slope extension line of the slope 5, and then the end portion thereof is connected to the small-diameter pipe body.
It is attached to 2a.
【００１３】しかるのち、クレーン等を操作して索条物
９を牽引すると、その牽引力は滑車10を介して管路１内
の水中に浮上している配管類２の引出し方向に作用し、
配管類２は管路１の一端開口部に向かって長さ方向に移
動して該配管類２の一端部、即ち、スロープ５上の小径
管体2aはスロープ５の傾斜面上を摺動しながら堰板３を
乗り越えて発進立坑11内に引き出される。Then, when the rope 9 is towed by operating a crane or the like, the towing force acts through the pulley 10 in the pull-out direction of the pipes 2 floating in the water in the pipe line 1,
The pipes 2 move in the lengthwise direction toward the one end opening of the pipe 1, and the one end of the pipes 2, that is, the small-diameter pipe 2a on the slope 5 slides on the inclined surface of the slope 5. While passing over the barrier plate 3, it is pulled out into the starting shaft 11.
【００１４】発進立坑11内に引き出された小径管体2aは
スロープ５上にまで引込まれた次の小径管体2aとのジョ
イント部2bを切り離すと共に索条物９を滑車10から外し
たのち、クレーン等によって地上側に引上げて回収し、
該小径管体2aから索条物９の結着を解いたのち、再び、
この索条物９を滑車10に掛け渡し、管路１の一端開口部
のスロープ５上に受止されている次の小径管体2aにその
端部を結着して再び、上記同様にして該小径管体2aの引
出し撤去作業を行い、地上に回収する。そして、この作
業を繰り返し行って管路１内の配管類２の撤去作業を完
了するものである。The small-diameter pipe 2a pulled out into the starting shaft 11 separates the joint portion 2b with the next small-diameter pipe 2a pulled up onto the slope 5, and the cord 9 is removed from the pulley 10, It is pulled up to the ground side by a crane and collected,
After releasing the binding of the cord 9 from the small diameter tubular body 2a,
This cord 9 is hung on the pulley 10 and its end is attached to the next small diameter pipe 2a received on the slope 5 at the opening at one end of the pipe 1, and again the same as above. The small-diameter tubular body 2a is pulled out and removed, and collected on the ground. Then, this work is repeated to complete the work of removing the pipes 2 in the pipeline 1.
【００１５】上記配管類２としては既設の管路１内に敷
設されているガス管等の小径管体であって、該管体が長
期の使用によって交換する必要が生じた場合に上記の撤
去方法を採用することができるが、このようなガス管等
の小径管体の撤去に限らず、管路を敷設する際に使用し
た配管類を管路の敷設後に撤去する方法として、好適に
採用し得るものである。例えば、図４は、泥水式推進工
法によって発進立坑11から到達立坑12間に亘ってヒュー
ム等の定尺既成管よりなる管路１を敷設する場合を示す
もので、この工法において使用された送、排泥水管21、
22や滑材注入管23、モルタル供給管24等の小径管体2aは
管路１の形成後、上記方法によって該管路１内から撤去
されるものである。The pipes 2 are small-diameter pipes such as gas pipes laid in the existing pipe line 1, and the pipes are removed when the pipes need to be replaced due to long-term use. Although the method can be adopted, it is not limited to the removal of such small-diameter pipes such as gas pipes, but it is preferably used as a method of removing the pipes used when laying the pipeline after laying the pipeline. It is possible. For example, FIG. 4 shows a case where a pipeline 1 made of a fixed length preformed pipe such as fume is laid between the starting shaft 11 and the reaching shaft 12 by the muddy water propulsion method. , Drainage pipe 21,
The small diameter pipes 2a such as 22, the lubricant injection pipe 23 and the mortar supply pipe 24 are to be removed from the inside of the pipe 1 by the above method after the formation of the pipe 1.
【００１６】この泥水式推進工法は公知のように、発進
立坑11側から到達立坑12に向かってシールド機31によっ
てトンネルを掘削しながら、このシールド機31に型枠等
からなる覆工形成部32を介してヒューム管等の既成管1a
を順次、継ぎ足しながら後続させ、最後部の既成管1aを
発進立坑11内に設置した推進ジャッキ33で押し進めてい
くものである。そして、シールド機31によって掘削され
た土砂を排出するための送、排泥水管21、22は地上に設
置したタンク34から発進立坑11内と既設管1a内を通じて
シールド機31の掘削土砂室に連結、連通してあり、これ
らの送、排泥水管21、22を還流する泥水によって掘削土
砂をタンク34内に排出させるように構成している。As is well known in the muddy water propulsion method, a shield forming machine 31 is used to excavate a tunnel from the starting vertical shaft 11 side toward the reaching vertical shaft 12 while a lining forming portion 32 including a frame or the like is formed on the shielding vertical machine 31. Prefabricated pipe 1a such as fume pipe through
Are successively added while being replenished, and the prefabricated pipe 1a at the rearmost part is pushed forward by the propulsion jack 33 installed in the starting shaft 11. Then, the sending and draining mud water pipes 21 and 22 for discharging the earth and sand excavated by the shield machine 31 are connected from the tank 34 installed on the ground to the excavation and sand chamber of the shield machine 31 through the start shaft 11 and the existing pipe 1a. The excavated earth and sand are discharged into the tank 34 by the muddy water which is in communication with each other and flows back through the muddy water discharge pipes 21 and 22.
【００１７】さらに、地上に滑材圧送用ポンプ35とモル
タル圧送用ポンプ36を設置し、これらのポンプ35、36に
接続した小径の滑材注入管23とモルタル供給管24とをシ
ールド機31に後続する覆工形成部32と最前側の既成管1a
の外周面側とに夫々連通させてあり、シールド機31によ
って掘削された壁面と覆工形成部32との間の隙間にモル
タルを供給、硬化させることにより覆工37を形成し、こ
の覆工37によって、推進する既設管1aを被覆すると共に
覆工37と既成管1aとの間の隙間に滑材38を供給して円滑
な推進を可能にしているものである。これらの滑材注入
管23やモルタル供給管24及び上記送、排泥水管21、22
は、既成管1aと等しい長さの定尺管を一本の既成管1aが
埋設される毎に発進立坑11側で継ぎ足していくものであ
る。Furthermore, a lubricant pump 35 and a mortar pump 36 are installed on the ground, and a small-diameter lubricant injection pipe 23 and a mortar supply pipe 24 connected to these pumps 35 and 36 are connected to the shield machine 31. Subsequent lining formation 32 and frontmost prefabricated pipe 1a
The lining 37 is formed by supplying mortar to the gap between the wall surface excavated by the shield machine 31 and the lining forming portion 32, which is communicated with the outer peripheral surface side of the mortar. The existing pipe 1a to be propelled is covered with 37, and the lubricant 38 is supplied to the gap between the lining 37 and the existing pipe 1a to enable smooth propulsion. These lubricant injection pipes 23, mortar supply pipes 24, and the above-mentioned sending and discharging mud water pipes 21, 22
Is a standard length pipe having a length equal to that of the prefabricated pipe 1a, and is replenished on the side of the starting shaft 11 every time one prefabricated pipe 1a is buried.
【００１８】こうして発進立坑11と到達立坑12との間に
地中に一連の既成管1aよりなる管路１を形成したのち、
シールド機31や最前側の既成管1aに対する送、排泥水管
21、22や滑材注入管23、モルタル供給管24の先端接続部
を切離すと共にこれらの管21〜24の発進立坑11側に突出
した部分を地上側からの各管21〜24に対して切離し、上
記図１〜図３に示すように、管路１内にこれらの各管21
〜24からなる小径管体2aを配設した状態にする。しかる
のち、上記の撤去方法によって小径管体2aを管路１内か
ら撤去、回収するものである。In this way, after forming the pipeline 1 consisting of a series of existing pipes 1a in the ground between the starting shaft 11 and the reaching shaft 12,
Sending and draining mud water pipe to the shield machine 31 and the existing pipe 1a on the front side
21 and 22, the lubricant injection pipe 23, the mortar supply pipe 24 is separated from the tip connection portion, and the portion of these pipes 21 to 24 projecting toward the starting shaft 11 is compared with each pipe 21 to 24 from the ground side. Cut off each of these tubes 21 in the conduit 1 as shown in FIGS.
The small-diameter tubular body 2a composed of 24 to 24 is placed. After that, the small-diameter pipe body 2a is removed from the pipe line 1 and collected by the above-mentioned removal method.
【００１９】なお、この泥水式推進工法においては、シ
ールド機31によってトンネルを掘削しながら既成管1aを
推進、埋設しているが、予め、シールド機に仮管を後続
させながら両立坑11、12間に仮管を埋設しておき、この
仮管に既成管1aを後続させながら発進立坑11側から到達
立坑12側に向かって推進ジャッキ33によって推進するこ
とにより管路１を形成する推進工法や、シールド機の掘
進に従ってシールド機内でセグメント等を組立てること
により管路１を形成していくシールド工法に対しても、
その管路１の形成後、該管路１内に配設される各種の小
径管体2aを上記撤去方法によって撤去することができる
ものである。In this muddy water propulsion method, the shield pipe 31 is used to excavate the tunnel while propelling and burying the prefabricated pipe 1a. A temporary pipe is embedded between the temporary pipes 1a, and the prefabricated pipe 1a follows the temporary pipes, and the propelling jack 33 propels the pipes 1 from the starting shaft 11 side toward the reaching shaft 12 side. , For the shield construction method in which the pipeline 1 is formed by assembling the segments and the like in the shield machine according to the excavation of the shield machine,
After the pipe 1 is formed, various small-diameter pipes 2a arranged in the pipe 1 can be removed by the above-mentioned removal method.
【００２０】[0020]
【発明の効果】以上のように本発明の方法によれば、立
坑間の地中に敷設した管路内に該管路の長さ方向に配設
している屈曲可能な配管類を撤去する方法であって、管
路の両端開口部の下周部側を堰止めて管路内に上記配管
類を浮かせる高さまで水を注入、滞留させると共に管路
の一端開口部側に該管路の内底面から開口端に向かって
斜め上方に傾斜したスロープを設け、且つ配管類の他端
開口部を密閉して該配管類を水中に浮かせた状態にし、
この状態で配管類を一方の立坑側に開口している管路の
一端側から牽引してスロープに沿って管路外に引き出す
ことを特徴とするものであるから、配管類を管路の内底
面に摺接させることなく管路外に引出して撤去すること
ができ、管路が損傷する虞れはない。As described above, according to the method of the present invention, the bendable pipes arranged in the lengthwise direction of the pipeline are removed from the pipeline laid in the ground between the shafts. The method is to inject and retain water to a height where the above pipes can be floated in the pipeline by blocking the lower peripheral side of the both end openings of the pipeline, and at the same time, at the opening side of the pipeline at one end of the pipeline. Provide a slope inclined obliquely upward from the inner bottom surface toward the opening end, and seal the other end opening of the pipes to make the pipes float in the water,
In this state, the piping is pulled from one end of the pipeline that is open to one of the shafts and is pulled out of the pipeline along the slope. It can be pulled out of the pipeline and removed without sliding on the bottom surface, and there is no risk of damaging the pipeline.
【００２１】さらに、配管類を管路内に注入、滞留させ
ている水に浮かせているので、小さな牽引力でもって円
滑且つ正確に引き出すことができ、その上、引出し側の
管路の一端部内底面には該管路の一端開口部に向かって
斜め上方に傾斜したスロープを配設しているので、この
スロープをガイドとして配管類の端部を管路内に堰止め
によって滞留している水面上に引上げながら管路から容
易に引き出すことができ、撤去作業が能率よく行なえる
ものである。Further, since the pipes are floated in the water that has been poured and accumulated in the pipeline, they can be smoothly and accurately drawn out with a small traction force, and furthermore, the inner bottom surface of one end of the pipeline on the drawer side can be obtained. Since a slope inclined obliquely upward toward the opening at one end of the pipe is installed in the pipe, the slope is used as a guide to guide the end of the pipes into the pipe on the water surface It can be pulled out easily from the pipeline while pulling it up, and removal work can be done efficiently.
【００２２】また、配管類の撤去準備作業は、管路の両
端部を堰止めして管路内に水を注入すると共に配管類の
他端開口部を密閉する作業ですむから、迅速に行なえる
ばかりでなく、経済的であり、その上、管路が小径管か
ら形成されていても、作業に困難をきたすことなく配管
類の撤去作業が可能となるものである。Further, the preparation work for removing the pipes can be done promptly because both ends of the pipes are dammed, water is injected into the pipes and the other end opening of the pipes is sealed. Not only is it economical, but the pipes can be removed without causing any difficulty in the work even if the pipes are formed from small diameter pipes.
【図１】本発明方法の実施例を示す簡略縦断側面図、FIG. 1 is a simplified vertical sectional side view showing an embodiment of the method of the present invention,
【図２】図１のＡーＡ線における拡大縦断正面図、FIG. 2 is an enlarged vertical front view taken along line AA of FIG.
【図３】図１のＢーＢ線における拡大縦断正面図、FIG. 3 is an enlarged vertical sectional front view taken along line BB of FIG.
【図４】泥水式推進工法によって地中に管路を敷設して
いる状態の簡略縦断側面図。FIG. 4 is a simplified vertical cross-sectional side view showing a state where a pipeline is laid in the ground by a muddy water propulsion method.
１ 管路 1a 既成管 ２ 配管類 2a 小径管体 ３、４ 堰板 ５ スロープ ６ 盲蓋 ８ 水 ９ 索条物 11 発進立坑 12 到達立坑 1 pipeline 1a Ready-made pipe 2 pipes 2a small diameter tube 3,4 weir plate 5 slopes 6 blind lid 8 water 9 rope 11 Start shaft 12 reaching shaft
フロントページの続き (72)発明者 竹内 幹雄 大阪市阿倍野区松崎町２丁目２番２号 株式会社奥村組内 (72)発明者 三島 亨介 大阪市阿倍野区松崎町２丁目２番２号 株式会社奥村組内 (72)発明者 和田 洋 大阪市阿倍野区松崎町２丁目２番２号 株式会社奥村組内 (72)発明者 林 威 大阪市阿倍野区松崎町２丁目２番２号 株式会社奥村組内 (56)参考文献 特開 平３−272383（ＪＰ，Ａ) 特開 昭63−255425（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) F16L 1/024 E21D 9/06 Front page continuation (72) Inventor Mikio Takeuchi 2-2, Matsuzaki-cho, Abeno-ku, Osaka City Okumura Gumi Co., Ltd. (72) Inventor Tosukesuke Mishima 2-2, Matsuzaki-cho, Abeno-ku, Osaka City Okumura Gumi Co., Ltd. (72) Inventor Hiroshi Wada 2-2-2 Matsuzaki-cho, Abeno-ku, Osaka-shi Okumura-gumi Co., Ltd. (72) Inventor Takeshi Hayashi 2-2-1 Matsuzaki-cho, Abeno-ku, Osaka-shi Okumura-gumi (56) Reference References JP-A-3-272383 (JP, A) JP-A-63-255425 (JP, A) (58) Fields investigated (Int.Cl. 7 , DB name) F16L 1/024 E21D 9/06
Claims (3)
の長さ方向に配設している屈曲可能な配管類を撤去する
方法であって、管路の両端開口部の下周部側を堰止めて
管路内に上記配管類を浮かせる高さまで水を注入、滞留
させると共に管路の一端開口部側に該管路の内底面から
開口端に向かって斜め上方に傾斜したスロープを設け、
且つ配管類の他端開口部を密閉して該配管類を水中に浮
かせた状態にし、この状態で配管類を一方の立坑側に開
口している管路の一端側から牽引してスロープに沿って
管路外に引き出すことを特徴とする管路内からの配管類
の撤去方法。1. A method for removing bendable pipes arranged in a length direction of a pipeline laid in the ground between vertical shafts, the method comprising the steps of opening both end portions of the pipeline. Water is injected and retained up to the height where the above pipes can be floated in the pipeline by blocking the lower peripheral side, and at one end of the pipeline is inclined obliquely upward from the inner bottom surface of the pipeline toward the opening end on the opening side. Provided a slope,
Moreover, the other end opening of the pipes is hermetically closed so that the pipes are floated in the water, and in this state, the pipes are pulled from one end side of the pipeline opening to the one shaft side and along the slope. A method of removing pipes from the inside of the pipeline, which is characterized in that the pipe is pulled out of the pipeline.
っていることを特徴とする請求項１記載の管路内からの
配管類の撤去方法。2. The method for removing pipes from the inside of a pipeline according to claim 1, wherein the openings at both ends of the pipeline are blocked by a blocking plate.
行っていることを特徴とする請求項１記載の管路内から
の配管類の撤去方法。3. The method for removing pipes from the inside of a pipeline according to claim 1, wherein the opening at one end of the pipeline is blocked by a slope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05358695A JP3455318B2 (en) | 1995-02-16 | 1995-02-16 | How to remove piping from inside the pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05358695A JP3455318B2 (en) | 1995-02-16 | 1995-02-16 | How to remove piping from inside the pipeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08219326A JPH08219326A (en) | 1996-08-30 |
| JP3455318B2 true JP3455318B2 (en) | 2003-10-14 |
Family
ID=12946967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05358695A Expired - Fee Related JP3455318B2 (en) | 1995-02-16 | 1995-02-16 | How to remove piping from inside the pipeline |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3455318B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101952950B1 (en) * | 2017-01-02 | 2019-02-27 | 한국수력원자력 주식회사 | Dismantle method of bulkhead in underwater water intake tunnel |
-
1995
- 1995-02-16 JP JP05358695A patent/JP3455318B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08219326A (en) | 1996-08-30 |
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